Should we be cautious about it?
Short answer: Yes
But these benefits come with a catch. It appears that when individuals are not motivated in their work by the value of the activities they engage in and their alignment with their sense of self, being proactive may lead to a drain of resources. Moreover, when individuals feel that their resources are diminished, they also find it more difficult to detach from work.
How to encourage healthy proactive behavior?
Stimulate self-managed motivation. How? Allow individuals to make relevant choices in the way they approach their work; give them a say in the decisional processes.